Mails.so

Mails.so Review 2026

Modern email platform built for developers

★★ 2.3 (4 plans evaluated)
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$5
Starting Price
4
Plans Available
3
Features
2
Support Channels
MailEyes Verdict

Modern email platform built for developers. API-first with clean documentation.

Best for: Solo developers and indie hackers needing a clean modern email API.

✅ Pros

  • Modern API design with great developer experience
  • Clean dashboard and documentation
  • Easy integration into modern stacks (Node, Python, Ruby)
  • Email validation and analytics included
  • Reasonable free tier

⚠️ Cons

  • Smaller user base means smaller community resources
  • Less mature than SendGrid/Postmark
  • Limited marketing campaign features
  • Smaller integration ecosystem

👍 When to choose Mails.so

Choose Mails.so if you value modern developer experience over established brand, building a new app, or prefer cleaner APIs over feature breadth.

👎 When to avoid

Avoid for enterprise scale (use SendGrid), top deliverability (Postmark), or marketing focus.

📊 vs Competitors

Modern alternative to SendGrid/Mailgun. Less mature but more developer-friendly UX.

📋 Mails.so Pricing Plans

PlanMonthlyYearlyContactsEmails/moType
Pro $4.8 10,000 0 Trial Get Started
Business $9.8 50,000 0 Trial Get Started
Unlimited $50 Unlimited 0 Trial Get Started
Enterprise $1899 Unlimited 0 Trial Get Started

⚡ Features

SMTP
Analytics
GDPR

🎯 Best For

Cold Outreach Startup Affiliate Marketer Solo Creator Affiliate White-labeling Newsletter Community Builder News Publisher Enterprise Agency

📊 Quality Scores

Features & Functionality1.0/5
Email Deliverability2.3/5
Customer Support2.3/5
Value for Money3.3/5

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Mails.so sounds right for you?

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